INVESTIGATING means we are aware of a specific issue and working to reproduce it. Often, getting a solid reproduction is what actually allows us to eliminate a bug in the end.

FIXING means that we have been able to reproduce an issue and are working on a fix. This might be a simple line of code or a larger task. Once we have the solution, we code, test and get it live. An issue with the label FIXING is on its way to being resolved.

FIX LIVE means that we have fixed the issue in a patch that has already gone live. For example, we had a bug that accounted for a quarter of all crashes on PS4. That issue was fixed in the latest PS4 game update that went live Dec 5. Many other issues are already addressed.